20199560

素因数分解:

$2^3\times 5^1\times {\mathrm{504989}}^1$

素因数の和:505000

約数の個数: 16

約数和(自身を含む): 45449100

約数和(自身を除く): 25249540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504989, 1009978, 2019956, 2524945, 4039912, 5049890, 10099780, 20199560]

約数ペア:

[(1, 20199560), (2, 10099780), (4, 5049890), (5, 4039912), (8, 2524945), (10, 2019956), (20, 1009978), (40, 504989)]